Do you still need more saves to investigate, Max? I'm at the end of my first season as Feyenoord in 24-25, added the Dutch leagues in 2023 and have only just realised that the Dutch Cup isn't there. I can probably conjure up a save from just before adding the additional leagues if you want.

Apologies, I may have come across a bit harsh there. Lousy sunday morning hangovers.
Either way, assuming it's the same as the Belgian system (and I have no reason to think that it is), Cadetes would be 14-15 years old. So anything after that would be comparable, all in all 19 players after a 2 year transfer ban for all teams age 16 and higher is a pretty low number.